Universal joint



April 9, 1935- o. H. HARRISON El AL I 1,996,996

UNIVERSAL JOINT Filed July 25, 1932 62 21 H 13 ,ZZj J III 30 1 K 4 2,9

%l M v. M4 19 f v mg; 100/ Patented Apr. 9, 1935 UNITED STATES PATENTUNIVERSAL JOINT I Oscar H. Harrison,

Larson,

Carl E. Swenson, and OScarJ. Rockford, 111.,

assignors to Mechanics Universal Joint Company, Rockford, 111., acorporation of Illinois Application July 25, 1932, Serial-No. 624,602

1 Claim; (01. 64-102) with our invention are so constructed whereby theymay be assembled on the trunnions of the yoke members each as a completesub-assembly, after which the two halves of the ring housing may bebolted thereto from opposite sides so as to mount the bearings in thehousing and at the same time clamp the housing sections tightly togetherfor retention o'flubricant therein.

The invention is illustrated inthe accompanying drawing, in which-Figure 1 is a side view of a universal joint made in accordance with ourinvention 'illustrating one of the trunnion hearings in longitudinalsection and another of the trunnion bearings in transverse section; Fig.2 is a view'taken on the line 22of Figgure 1; l e l Fig. 3 is aperspective View of one of the bearing blocks removed from the joint;

Fig. e is a view similar to Fig. 2 but showing a modified or alternativeconstruction, and -Fig.- 5 is a perspective view of one of the bearingblocks of Fig. 4.

Similar reference numerals are responding parts throughout the Theuniversal joint comprises one of which is connected with and the otherwith the driven is of the conventional forged metrically opposedtrunnions applied to corviews;

yokes 6 and 1, the driving part part. The yoke 1 type having dia- 8suitably formed integral therewith. The yoke 6 on the other hand isstamped from sheet metal to provide a coupling flange 9 integral withthe body portion thereof, the trunnions It being provided by theprojecting ends of a pin driven through the portion II of the yoke, asset 'forthin the copend-' ing application of Oscar H. Harrison, SerialNo. 587,694, filed January 20, 1932. Bearings for the trunnions 8 areindicated generally by the numeral I2, and other bearings forthetrunnions I I] by the numeral I3. A ring-shaped housing I4 forconnecting the trunnions as well as supplyup of two sections I5 and I 6stamped from sheet metal, the secand I6, whereby tion l5 being assembledon the yoke 6 before the pin which provides the trunnionsqlll has beendriven into place, and the section I6 beingsimplyslipped over.the'end-of the yoke into position alongside the trunnions 8.Disregarding for the moment the'other. details of construction of theOFFICE bearings l2 and I3,it will be seen that they each comprise a-'bearing block I I of rectangular crossesection, as indicated in Figure1, having opposed parallel flat faces I8 for abutmentpwith fiat surfacesI8 on the inside of the sections I5 to permit clamping thefblocks inplace by enteringxbolts Ill-through registering holes in the housingsections and applying nuts 20 to the projecting threaded ends of saidbolts. The tightening of the nuts clamps the housing sections togetherand causes tight engagement of the surfaces IS with the surfaces I8 forasolid mounting of thebearings. The purpose of this construction istoprovideasuitable power trans mitting connection between thetrunnions,while also allowing angular movement of one yoke with respect to theother, also to provide proper bearings for the trunnions and means forlubricating these bearings over. a long period.

Inaccordanc'e with the disclosure in'the Swen. son patent, the trunnions8 and It find end thrust bearing .support onflat surfaces 2i machined onthe inside of the outer flangeof the housing sections, and half roundnotchesQ22 are provided in the inner flanges of said sections toaccommodate the trunnions'and the packing means 23 encircling the same.The latter, in accordance with the patent, consists of a packing washer24 on a ferrule 25 mounted with-a sliding. fit on the trun- 'nion,..a11d if desired a spring washer arranged to bear against the out-turnedflange of the ferrule to urge the packing washer 24 against a shoulder.21 around the base of the trunnion. The spring washer is placed undercompression by the bearing'on the trunnion so as to urge the packingwasher 24 into snug engagementwith the shoulder 27,whereby to.preventleakage offioil along the. trunnion and out over the yoke member.Furthermore, the packing washer 24 in each instance maintains anoil-tight joint between the housing structure and each trunnion, due tothe fact that the packing is compressed inthe clamping together of thehousing sections. The universal joint is, therefore, completely sealedagainst-loss of lubricant and also against entry of dirt and water. Thebearing construction should be clear from Figs. 1-3. The bearing blockI1 has a cylindrical bearing recess 28 provided thereinof the proper

